Introducing the new Propero 4 helmet - the aerodynamics of the S-Works Evade 3 combined with the extraordinary ventilation of the S-Works Prevail 3, plus the comfort and reliability of all Specialized helmets, and the 5-star rating from the Virginia Tech Institute ®. Every detail of the Propero 4 was designed with the equation of Aerodynamics + Ventilation + Lightness = Speed in mind.
 AERODYNAMICS: In the development of the Propero 4, aerodynamics was the starting point, and to this end we carried out extensive CFD and in-house wind tunnel tests. With the profile inspired by the S-Works Evade 3 we already gain 4 watts, or 15 seconds over a distance of 40km.
 VENTILATION: Taking inspiration from the S-Works Prevail 3 helmet we achieved our goals in terms of quality. We have incorporated the rear vents of the S-Works Prevail 3, and have introduced 2mm micro-channels that create turbulence in the airflow through the helmet, thus creating a continuous and refreshing passage of air.
 ATTENTION TO DETAIL : In addition to aerodynamics and ventilation, the Propero 4 is characterized by meticulous attention to detail. We have applied cutting-edge technologies such as MIPS and a sealing system designed for comfort. The Propero 4 goes beyond expectations.
-  Mips C-Solution technology
-  In the Virginia Tech® Helmet Rating™ scale of the Virginia Polytechnic Institute and State University, the Propero 4 obtained 5 stars, the best rating.
- The FS3 sealing system and occipital base adjustment allow fine adjustment to the individual head shape. The position angle of the helmet can be changed for compatibility with glasses.
-  TriFix strap system for optimal comfort.
-  Possibility of inserting glasses.
-  Thin straps, 10mm wide.
-  Large rear vents and internal micro-channels for maximum ventilation.
-  Front profile inspired by the S-Works Evade 3.
-  Very resistant polycarbonate shell with top quality finish.